Former Prime Minister Sir John Major Joins The Election Campaign(01 of21)
Open Image ModalSOLIHULL, ENGLAND - APRIL 21: Former Conservative British Prime Minister John Major waits to make a speech on April 21, 2015 in Solihull, England. Major joined the election campaign with a speech which addressed a number of issues and in which he called Labour a class-based and divisive party. (Photo by Carl Court/Getty Images) (credit:Carl Court via Getty Images)
Former Prime Minister Sir John Major Joins The Election Campaign(02 of21)
Open Image ModalSOLIHULL, ENGLAND - APRIL 21: Former Conservative British Prime Minister John Major arrives to make a speech on April 21, 2015 in Solihull, England. Major joined the election campaign with a speech which addressed a number of issues and in which he called Labour a class-based and divisive party. (Photo by Carl Court/Getty Images) (credit:Carl Court via Getty Images)
BRITAIN-POLITICS-VOTE-CONSERVATIVES-MAJOR(03 of21)
Open Image ModalFormer Conservative British Prime Minister Sir John Major addresses delegates in Solihull in central England on April 21, 2015. Major asked voters Tuesday to reject a partnership between the Labour party and the Scottish National Party (SNP) which he claims would lead to a 'weak and unstable' government. AFP PHOTO/PAUL ELLIS (Photo credit should read PAUL ELLIS/AFP/Getty Images) (credit:PAUL ELLIS via Getty Images)
Former Prime Minister Sir John Major Joins The Election Campaign(04 of21)
Open Image ModalSOLIHULL, ENGLAND - APRIL 21: Former Conservative British Prime Minister John Major gestures during a speech on April 21, 2015 in Solihull, England. Major joined the election campaign with a speech which addressed a number of issues and in which he called Labour a class-based and divisive party. (Photo by Carl Court/Getty Images) (credit:Carl Court via Getty Images)
BRITAIN-POLITICS-VOTE-CONSERVATIVES-MAJOR(05 of21)
Open Image ModalFormer Conservative British Prime Minister Sir John Major addresses delegates in Solihull in central England on April 21, 2015. Major asked voters Tuesday to reject a partnership between the Labour party and the Scottish National Party (SNP) which he claims would lead to a 'weak and unstable' government. AFP PHOTO/PAUL ELLIS (Photo credit should read PAUL ELLIS/AFP/Getty Images) (credit:PAUL ELLIS via Getty Images)
Former Prime Minister Sir John Major Joins The Election Campaign(06 of21)
Open Image ModalSOLIHULL, ENGLAND - APRIL 21: Former Conservative British Prime Minister John Major makes a speech on April 21, 2015 in Solihull, England. Major joined the election campaign with a speech which addressed a number of issues and in which he called Labour a class-based and divisive party. (Photo by Carl Court/Getty Images) (credit:Carl Court via Getty Images)
BRITAIN-POLITICS-VOTE-CONSERVATIVES-MAJOR(07 of21)
Open Image ModalFormer Conservative British Prime Minister Sir John Major addresses delegates in Solihull in central England on April 21, 2015. Major asked voters Tuesday to reject a partnership between the Labour party and the Scottish National Party (SNP) which he claims would lead to a 'weak and unstable' government. AFP PHOTO/PAUL ELLIS (Photo credit should read PAUL ELLIS/AFP/Getty Images) (credit:PAUL ELLIS via Getty Images)
BRITAIN-POLITICS-VOTE-CONSERVATIVES-MAJOR(08 of21)
Open Image ModalFormer Conservative British Prime Minister Sir John Major addresses delegates in Solihull in central England on April 21, 2015. Major asked voters Tuesday to reject a partnership between the Labour party and the Scottish National Party (SNP) which he claims would lead to a 'weak and unstable' government. AFP PHOTO/PAUL ELLIS (Photo credit should read PAUL ELLIS/AFP/Getty Images) (credit:PAUL ELLIS via Getty Images)
BRITAIN-POLITICS-VOTE-SNP(09 of21)
Open Image ModalScottish First Minister and Scottish National Party (SNP) leader Nicola Sturgeon campaigns in Ayr, south west of Glasgow, in Scotland, on April 21, 2015, ahead of a general election in Britain on May 7, 2015. More than two million people have registered to vote in the last month in Britain's tightly-contested general election, official figures showed, with the window closing at midnight (2300 GMT) Monday. AFP PHOTO/ANDY BUCHANAN (Photo credit should read Andy Buchanan/AFP/Getty Images) (credit:ANDY BUCHANAN via Getty Images)
BRITAIN-POLITICS-VOTE-SNP(10 of21)
Open Image ModalScottish First Minister and Scottish National Party (SNP) leader Nicola Sturgeon (2nd L) poses for pictures as she campaigns in Ayr, south west of Glasgow, in Scotland, on April 21, 2015, ahead of a general election in Britain on May 7, 2015. More than two million people have registered to vote in the last month in Britain's tightly-contested general election, official figures showed, with the window closing at midnight (2300 GMT) Monday. AFP PHOTO/ANDY BUCHANAN (Photo credit should read Andy Buchanan/AFP/Getty Images) (credit:ANDY BUCHANAN via Getty Images)
BRITAIN-POLITICS-VOTE-SNP(11 of21)
Open Image ModalScottish First Minister and Scottish National Party (SNP) leader Nicola Sturgeon addresses television crews as she campaigns in Ayr, south west of Glasgow, in Scotland, on April 21, 2015, ahead of a general election in Britain on May 7, 2015. More than two million people have registered to vote in the last month in Britain's tightly-contested general election, official figures showed, with the window closing at midnight (2300 GMT) Monday. AFP PHOTO/ANDY BUCHANAN (Photo credit should read Andy Buchanan/AFP/Getty Images) (credit:ANDY BUCHANAN via Getty Images)
BRITAIN-POLITICS-VOTE-SNP(12 of21)
Open Image ModalScottish First Minister and Scottish National Party (SNP) leader Nicola Sturgeon campaigns in Ayr, south west of Glasgow, in Scotland, on April 21, 2015, ahead of a general election in Britain on May 7, 2015. More than two million people have registered to vote in the last month in Britain's tightly-contested general election, official figures showed, with the window closing at midnight (2300 GMT) Monday. AFP PHOTO/ANDY BUCHANAN (Photo credit should read Andy Buchanan/AFP/Getty Images) (credit:ANDY BUCHANAN via Getty Images)
BRITAIN-POLITICS-VOTE-SNP(13 of21)
Open Image ModalScottish First Minister and Scottish National Party (SNP) leader Nicola Sturgeon campaigns in Ayr, south west of Glasgow, in Scotland, on April 21, 2015, ahead of a general election in Britain on May 7, 2015. More than two million people have registered to vote in the last month in Britain's tightly-contested general election, official figures showed, with the window closing at midnight (2300 GMT) Monday. AFP PHOTO/ANDY BUCHANAN (Photo credit should read Andy Buchanan/AFP/Getty Images) (credit:ANDY BUCHANAN via Getty Images)
BRITAIN-POLITICS-VOTE-SNP(14 of21)
Open Image ModalSupporters of the Scottish National Party (SNP) are pictured as SNP leader Nicola Sturgeon campaigns in Ayr, south west of Glasgow, in Scotland, on April 21, 2015, ahead of a general election in Britain on May 7, 2015. More than two million people have registered to vote in the last month in Britain's tightly-contested general election, official figures showed, with the window closing at midnight (2300 GMT) Monday. AFP PHOTO/ANDY BUCHANAN (Photo credit should read Andy Buchanan/AFP/Getty Images) (credit:ANDY BUCHANAN via Getty Images)
BRITAIN-POLITICS-VOTE-SNP(15 of21)
Open Image ModalScottish First Minister and Scottish National Party (SNP) leader Nicola Sturgeon campaigns in Ayr, south west of Glasgow, in Scotland, on April 21, 2015, ahead of a general election in Britain on May 7, 2015. More than two million people have registered to vote in the last month in Britain's tightly-contested general election, official figures showed, with the window closing at midnight (2300 GMT) Monday. AFP PHOTO/ANDY BUCHANAN (Photo credit should read Andy Buchanan/AFP/Getty Images) (credit:ANDY BUCHANAN via Getty Images)
BRITAIN-POLITICS-VOTE-SNP(16 of21)
Open Image ModalA supporter of the Scottish National Party (SNP) is pictured as SNP leader Nicola Sturgeon campaigns in Ayr, south west of Glasgow, in Scotland, on April 21, 2015, ahead of a general election in Britain on May 7, 2015. More than two million people have registered to vote in the last month in Britain's tightly-contested general election, official figures showed, with the window closing at midnight (2300 GMT) Monday. AFP PHOTO/ANDY BUCHANAN (Photo credit should read Andy Buchanan/AFP/Getty Images) (credit:ANDY BUCHANAN via Getty Images)
BRITAIN-POLITICS-VOTE-SNP(17 of21)
Open Image ModalScottish First Minister and Scottish National Party (SNP) leader Nicola Sturgeon campaigns in Ayr, south west of Glasgow, in Scotland, on April 21, 2015, ahead of a general election in Britain on May 7, 2015. More than two million people have registered to vote in the last month in Britain's tightly-contested general election, official figures showed, with the window closing at midnight (2300 GMT) Monday. AFP PHOTO/ANDY BUCHANAN (Photo credit should read Andy Buchanan/AFP/Getty Images) (credit:ANDY BUCHANAN via Getty Images)
BRITAIN-POLITICS-VOTE-SNP(18 of21)
Open Image ModalScottish First Minister and Scottish National Party (SNP) leader Nicola Sturgeon (C) is pictured as she campaigns in Ayr, south west of Glasgow, in Scotland, on April 21, 2015, ahead of a general election in Britain on May 7, 2015. More than two million people have registered to vote in the last month in Britain's tightly-contested general election, official figures showed, with the window closing at midnight (2300 GMT) Monday. AFP PHOTO/ANDY BUCHANAN (Photo credit should read Andy Buchanan/AFP/Getty Images) (credit:ANDY BUCHANAN via Getty Images)
BRITAIN-POLITICS-VOTE-SNP(19 of21)
Open Image ModalSupporters of the Scottish National Party (SNP) are pictured as SNP leader Nicola Sturgeon campaigns in Ayr, south west of Glasgow, in Scotland, on April 21, 2015, ahead of a general election in Britain on May 7, 2015. More than two million people have registered to vote in the last month in Britain's tightly-contested general election, official figures showed, with the window closing at midnight (2300 GMT) Monday. AFP PHOTO/ANDY BUCHANAN (Photo credit should read Andy Buchanan/AFP/Getty Images) (credit:ANDY BUCHANAN via Getty Images)
BRITAIN-POLITICS-VOTE-SNP(20 of21)
Open Image ModalScottish First Minister and Scottish National Party (SNP) leader Nicola Sturgeon is pictured as she campaigns in Ayr, south west of Glasgow, in Scotland, on April 21, 2015, ahead of a general election in Britain on May 7, 2015. More than two million people have registered to vote in the last month in Britain's tightly-contested general election, official figures showed, with the window closing at midnight (2300 GMT) Monday. AFP PHOTO/ANDY BUCHANAN (Photo credit should read Andy Buchanan/AFP/Getty Images) (credit:ANDY BUCHANAN via Getty Images)
BRITAIN-POLITICS-VOTE-SNP(21 of21)
Open Image ModalScottish First Minister and Scottish National Party (SNP) leader Nicola Sturgeon is pictured as she campaigns in Ayr, south west of Glasgow, in Scotland, on April 21, 2015, ahead of a general election in Britain on May 7, 2015. More than two million people have registered to vote in the last month in Britain's tightly-contested general election, official figures showed, with the window closing at midnight (2300 GMT) Monday. AFP PHOTO/ANDY BUCHANAN (Photo credit should read Andy Buchanan/AFP/Getty Images) (credit:ANDY BUCHANAN via Getty Images)